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-rw-r--r--extras/relocation.py85
1 files changed, 85 insertions, 0 deletions
diff --git a/extras/relocation.py b/extras/relocation.py
new file mode 100644
index 0000000..7e821f4
--- /dev/null
+++ b/extras/relocation.py
@@ -0,0 +1,85 @@
+#! /usr/bin/env python
+# encoding: utf-8
+
+"""
+Waf 1.6
+
+Try to detect if the project directory was relocated, and if it was,
+change the node representing the project directory. Just call:
+
+ waf configure build
+
+Note that if the project directory name changes, the signatures for the tasks using
+files in that directory will change, causing a partial build.
+"""
+
+import os
+from waflib import Build, ConfigSet, Task, Utils, Errors
+from waflib.TaskGen import feature, after_method
+
+EXTRA_LOCK = '.old_srcdir'
+
+old1 = Build.BuildContext.store
+def store(self):
+ old1(self)
+ db = os.path.join(self.variant_dir, EXTRA_LOCK)
+ env = ConfigSet.ConfigSet()
+ env.SRCDIR = self.srcnode.abspath()
+ env.store(db)
+Build.BuildContext.store = store
+
+old2 = Build.BuildContext.init_dirs
+def init_dirs(self):
+
+ if not (os.path.isabs(self.top_dir) and os.path.isabs(self.out_dir)):
+ raise Errors.WafError('The project was not configured: run "waf configure" first!')
+
+ srcdir = None
+ db = os.path.join(self.variant_dir, EXTRA_LOCK)
+ env = ConfigSet.ConfigSet()
+ try:
+ env.load(db)
+ srcdir = env.SRCDIR
+ except:
+ pass
+
+ if srcdir:
+ d = self.root.find_node(srcdir)
+ if d and srcdir != self.top_dir and getattr(d, 'children', ''):
+ srcnode = self.root.make_node(self.top_dir)
+ print("relocating the source directory %r -> %r" % (srcdir, self.top_dir))
+ srcnode.children = {}
+
+ for (k, v) in d.children.items():
+ srcnode.children[k] = v
+ v.parent = srcnode
+ d.children = {}
+
+ old2(self)
+
+Build.BuildContext.init_dirs = init_dirs
+
+
+def uid(self):
+ try:
+ return self.uid_
+ except AttributeError:
+ # this is not a real hot zone, but we want to avoid surprises here
+ m = Utils.md5()
+ up = m.update
+ up(self.__class__.__name__.encode())
+ for x in self.inputs + self.outputs:
+ up(x.path_from(x.ctx.srcnode).encode())
+ self.uid_ = m.digest()
+ return self.uid_
+Task.Task.uid = uid
+
+@feature('c', 'cxx', 'd', 'go', 'asm', 'fc', 'includes')
+@after_method('propagate_uselib_vars', 'process_source')
+def apply_incpaths(self):
+ lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env['INCLUDES'])
+ self.includes_nodes = lst
+ bld = self.bld
+ self.env['INCPATHS'] = [x.is_child_of(bld.srcnode) and x.path_from(bld.bldnode) or x.abspath() for x in lst]
+
+